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Electrodynamics of multifilament superconductors

Authors
Journal
Cryogenics
0011-2275
Publisher
Elsevier
Publication Date
Volume
50
Issue
5
Identifiers
DOI: 10.1016/j.cryogenics.2010.03.001
Keywords
  • A. Composite Conductors
  • A. Multifilament Wires And Tapes
  • A. Superconductors
  • C. Electromagnetic Phenomena
  • C. Electrical Conductivity
Disciplines
  • Physics

Abstract

Abstract A general scheme for electrodynamics of composite multifilament superconductors is presented. Our approach is based on an anisotropic continuum model for a multifilament wire taking into account smooth dependence of superconductor conductivity on temperature, magnetic field and current density. The electrodynamics equations are self-consistently treated together with heat transfer. On the base of this scheme, 2D codes were developed for simulation of non-stationary processes in composite superconductors. A comparison of current density dynamics in twisted and non-twisted multifilament wires is presented as an example. The dynamics of current density in a twisted wire proved to be determined by two characteristic times and differs from the predictions based on the critical state model.

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